*{
	margin: 0;
	padding: 0;
}
body,html{
	font:400 15px/1.5 PingFangSC-regular,Tahoma,"Lucida Grande",Verdana,"Microsoft Yahei",STXihei,hei
}
#headerImg {
	position: relative;
}
#headerImg img {
	width: 375px;
	height:170px;
	border-radius: 0px 0px 55px 55px;
}
nav{
	color: #666666;
	display: flex;
	flex-direction: row;
	justify-content: space-evenly;
	position: absolute;
	width: 100%;
	height: 50px;
	padding-top: 10px;
	background-image:linear-gradient(rgba(0,0,0,.4),rgba(232, 238, 226,.3));
}
nav div {
	 width: 312px;
	 height: 28px;
	 display: flex;
	 background-color: #FFFFFF;
	 border-radius: 20px;
}
nav div span {
	position: relative;
	top: -23px;
	display: inline-block;
	height: 28px;
}
nav div span::before{
	position: relative;
	top: 22px;
	content: '';
	margin: 2px 0px 12px 2px;
	display: inline-block;
	width: 35px;
	height: 28px;
	transform: scale(.7);
	background-size: 100%;
	background-repeat: no-repeat;
	background-image: url(https://pic.c-ctrip.com/platform/h5/home/home-common-sprite2x@v7.15.png);
}
nav>span {
	transform: scale(.95);
	font-size: 13px;
	text-align: center;
	position: relative;
	top: -8px;
	display: inline-block;
	width: 34px;
	color: #FFFFFF;
}
nav>span::before{
	position: relative;
	top: 4px;
	background-size: 100%;
	content: '';
	display: inline-block;
	 width: 22px;
	 height: 21px;
	 background-position: 0px -38px;
	background-repeat: no-repeat;
	background-image: url(https://pic.c-ctrip.com/platform/h5/home/home-common-sprite2x@v7.15.png);
}